'''
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with self work for additional information
 * regarding copyright ownership.  The ASF licenses self file
 * to you under the Apache License, Version 2.0 (the
 * "License") you may not use self file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http:#www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
'''
from base.rdf.StmtIterator import StmtIterator
from base.util.iterator.impl.WrappedIterator import WrappedIterator

#import java.util.Iterator;

#import org.apache.jena.rdf.model.*;
#import org.apache.jena.util.iterator.*;

'''
 * An implementation of StmtIterator.
'''

# WrappedIterator<Statement>
class StmtIteratorImpl(WrappedIterator, StmtIterator):
##    private Statement current

    # param Iterator<Statement> iterator
    def __init__(self, iterator):
        self.current = None
        super().__init__(iterator, False)
    

    '''
     * return *and remember* the next element. It must be remembered
     * so that remove works whichever next-method is called.
    '''
    # @Override
    # param 
    # result Statement
    def next(self):
        self.current = super().next()
        return self.current
    

    # @Override
    # param 
    # result void
    def remove(self):
        super().remove()
        self.current.remove()
    

    # @Override
    # param 
    # result Statement
    def nextStatement(self):
        return self.next()
    

